Method for detecting receipt of input in wireless communication terminal by using interrupt handler

Abstract

A wireless communication terminal controlling an input detecting operation by using an interrupt handler is disclosed. The wireless communication terminal includes: a general purpose input output (GPIO) port for receiving an input, changing a state of the GPIO port according to the input and transmitting a signal when the input is received; a first timer for providing a first predetermined interval; a second timer for providing a second predetermined interval; a controlling unit for activating the interrupt handler to receive the signal from the GPIO port and generate an interrupt by receiving the signal for activating the first timer and the second timer, un-activating the interrupt handler when the interrupt handler generates the interrupt, performing the input detecting operation based on the first predetermined interval, re-activating the interrupt handler based on the second predetermined interval for stopping to perform the input detecting operation.

1 . A wireless communication terminal controlling an input detecting operation by using an interrupt handler, the wireless communication terminal comprising: 
 a general purpose input output (GPIO) port for receiving an input from a user, changing a state of the GPIO port according to the input and transmitting a signal when the input is received from the user;    a first timer for providing a first predetermined interval of performing the input detecting operation;    a second timer for providing a second predetermined interval of activating the interrupt handler;    a controlling unit for activating the interrupt handler to receive the signal from the GPIO port and generate an interrupt by receiving the signal for activating the first timer and the second timer, un-activating the interrupt handler when the interrupt handler generates the interrupt, performing the input detecting operation based on the first predetermined interval, re-activating the interrupt handler based on the second predetermined interval for stopping to perform the input detecting operation.    
   
   
       2 . The wireless communication terminal of  claim 1 , wherein the controlling unit activates the interrupt handler and activates the first timer and the second timer when the wireless communication terminal is initialized, deactivates the interrupt handler by receiving the interrupt from the interrupt handler and re-activates the interrupt handler when the second timer expires.  
   
   
       3 . The wireless communication terminal of  claim 2 , wherein the input detecting operation is a set of tasks for determining whether the input is received from a user by polling a state of the GPIO port, determining a type of the input when there is the input received from the user and performing corresponding service routines according to the type of the input.  
   
   
       4 . The wireless communication terminal of  claim 3 , wherein the controlling unit deactivates the first timer and the second timer when the second timer expires and re-activates the interrupt handler.  
   
   
       5 . A method for controlling an input detecting operation by using an interrupt handler in wireless communication terminal, comprising the steps of: 
 a) activating an interrupt handler to generate an interrupt by receiving a signal from a general purpose input output (GPIO) port when the GPIO port receives an input from a user;    b) generating the interrupt by receiving the signal from the GPIO port, deactivating the interrupt handler after generating the interrupt and activating a first timer and a second timer;    c) performing an input detecting operation when the first timer expires; and    d) deactivating the input detecting operation when the second timer expires and re-activating the interrupt handler.    
   
   
       6 . The method of  claim 5 , wherein in the step b), the interrupt handler generates the interrupt by receiving the signal from the GPIO port when the input is inputted into the GPIO port and the interrupt handler is deactivated after generating the interrupt.  
   
   
       7 . The method of  claim 6 , wherein in the step c), the input detecting operation is a set of tasks for determining whether the input is received from a user by polling a state of the GPIO port, determining a type of the input when there is the input received from the user and performing corresponding service routines according to the type of the input.  
   
   
       8 . The method of  claim 7 , wherein in the step d), the first timer and the second timer are deactivated when the second timer expires and re-activates the interrupt handler.